This survey analyzed 5,453 software engineering articles published between 1993-2002 and found that 103 (1.9%) reported controlled experiments. The experiments involved 113 total controlled experiments, with 12 articles reporting more than one experiment. Journals and conferences focused on empirical software engineering reported a higher percentage of controlled experiments. The experiments involved 207 scholars from 109 institutions in 19 countries, with the top-ranked scholar involved in 6 experiments and the top institution using 100 professionals as subjects.